<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col class="addRoleBtn">
          <el-button type="primary" @click="roleDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '','vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightsById(scope.row,item1.id)"> 
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二三级权限 -->
              <el-col :span="19">
                <el-row :class="[ i2===0?'':'bdtop','vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <!-- 二级权限 -->
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightsById(scope.row,item2.id)">
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                    <!-- 三级权限 -->
                  <el-col :span="18">
                      <el-tag v-for="(item3) in item2.children" :key="item3.id" type="warning" closable @close="removeRightsById(scope.row,item3.id)">
                          {{item3.authName}}
                      </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="285px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="editRolesById(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeRolesById(scope.row.id)"
              >删除</el-button
            >
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightsDialog(scope.row)" @close="setRightsDialogClose"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="roleDialogVisible"
      width="50%"
      @close="roleDialogClose"
    >
      <!-- 主体内容区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="roleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改角色对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="eidtRolesVisible"
      width="50%"
      @close="eidtRolesClosed"
    >
      <el-form
        ref="editFormRef"
        :model="editForm"
        :rules="editFormRules"
        label-width="80px"
      >
        <el-form-item label="角色名称">
          <el-input v-model="editForm.roleName" disabled ></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc" ></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="eidtRolesVisible = false">取 消</el-button>
        <el-button type="primary" @click="eidtRolesInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightsDialogVisible"
      width="50%">
      <el-tree :data="rightsList" :props="treeProps" ref="treeRef" show-checkbox node-key="id" :default-expand-all="true" :default-checked-keys="defKeys"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //所以角色列表
      rolesList: [],
      //所有权限的数据
      rightsList: [],
      //控制添加对话框的显示与隐藏
      roleDialogVisible: false,
      //控制修改对话框的显示与隐藏
      eidtRolesVisible: false,
      //控制分配权限对话框的显示与隐藏
      setRightsDialogVisible: false,
      //当前即将分配权限的角色id
      roleId:'',
      //默认选中的节点id值数组
      defKeys: [],
      //树形空间的属性
      treeProps: {
        label: "authName",
        children: "children",
      },
      //添加角色的表单数据
      addForm: {
        roleName: "",
        roleDesc: "",
      },
      editForm: {},
      //添加表单的验证规则对象
      addFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
          { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" },
        ],
      },
      editFormRules: {
        roleDesc: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
          { min: 2, max: 8, message: "长度在 2 到 8 个字符", trigger: "blur" },
        ],
      },
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    //获取所有的角色列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");

      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolesList = res.data;
    },
    //添加用户对话框的关闭事件
    roleDialogClose() {
      this.$refs.addFormRef.resetFields();
    },
    //点击按钮，添加新角色
    addRoles() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;

        //可以发起添加角色的网络请求
        const { data: res } = await this.$http.post("roles", this.addForm);
        if (res.meta.status !== 201) {
          return this.$message.error("添加角色失败");
        }

        this.$message.success("添加角色成功");

        //隐藏添加角色对话框
        this.roleDialogVisible = false;
        //重新获取用户列表
        this.getRolesList();
      });
    },
    //弹框确认是否删除数据
    async removeRolesById(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该角色, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") return;

      const { data: res } = await this.$http.delete("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除角色失败");
      }
      this.$message.success("删除角色成功");
      this.getRolesList();
    },
    //展示编辑用户对话框
    async editRolesById(id) {
      // console.log(id);
      const { data: res } = await this.$http.get("roles/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("查询信息失败");
      }
      this.editForm = res.data;
      // console.log(this.editForm);
      this.eidtRolesVisible = true;
    },
    //监听修改用户对话框的关闭事件
    eidtRolesClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    eidtRolesInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        //发起修改用户信息请求
        const {data:res}=await this.$http.put('roles/'+this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        }
        //提示修改成功
        this.$message.success("更新用户信息成功");
        //刷新用户列表
        this.getRolesList();
        //关闭对话框
        this.eidtRolesVisible = false;
      });
    },
    //删除角色
    async removeRightsById(role, rightsId) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该权限, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") return;

      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightsId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败");
      }
      this.$message.success("删除权限成功");
      role.children = res.data;
    },
    //展示分配权限的对话框
    async showSetRightsDialog(role) {
      this.roleId=role.id
      //获取所有权限的数据
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status !== 200) {
        return this.$message.error("获取数据失败");
      }
      //把获取到的数据保存到data中
      this.rightsList = res.data;
      //递归三级节点的id
      this.getLeafKeys(role, this.defKeys);
      this.setRightsDialogVisible = true;
    },
    //通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys数组中
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => this.getLeafKeys(item, arr));
    },
    //监听分配权限对话框的关闭事件
    setRightsDialogClose() {
      this.defKeys = [];
    },
    //点击为角色分配权限
    async allotRights(){
      const keys=[
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]
      console.log(keys);
      const idStr=keys.join(',')

      const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

      if(res.meta.status !==200){
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightsDialogVisible=false
    }
  },
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
.addRoleBtn{
  display: flex;
  justify-content: flex-end;
}

</style>